diff --git a/netbox/dcim/models/device_component_templates.py b/netbox/dcim/models/device_component_templates.py
index 3b136987d..6ff58b0f0 100644
--- a/netbox/dcim/models/device_component_templates.py
+++ b/netbox/dcim/models/device_component_templates.py
@@ -120,6 +120,12 @@ class ModularComponentTemplateModel(ComponentTemplateModel):
             ),
         )
 
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        # Cache the original DeviceType ID for reference under clean()
+        self._original_device_type = self.device_type_id
+
     def to_objectchange(self, action):
         objectchange = super().to_objectchange(action)
         if self.device_type is not None:
@@ -131,6 +137,11 @@ class ModularComponentTemplateModel(ComponentTemplateModel):
     def clean(self):
         super().clean()
 
+        if self.pk is not None and self._original_device_type != self.device_type_id:
+            raise ValidationError({
+                "device_type": "Component templates cannot be moved to a different device type."
+            })
+
         # A component template must belong to a DeviceType *or* to a ModuleType
         if self.device_type and self.module_type:
             raise ValidationError(
diff --git a/netbox/dcim/models/device_components.py b/netbox/dcim/models/device_components.py
index b879b77d3..c30ce3a97 100644
--- a/netbox/dcim/models/device_components.py
+++ b/netbox/dcim/models/device_components.py
@@ -78,6 +78,12 @@ class ComponentModel(NetBoxModel):
             ),
         )
 
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        # Cache the original Device ID for reference under clean()
+        self._original_device = self.device_id
+
     def __str__(self):
         if self.label:
             return f"{self.name} ({self.label})"
@@ -88,6 +94,14 @@ class ComponentModel(NetBoxModel):
         objectchange.related_object = self.device
         return objectchange
 
+    def clean(self):
+        super().clean()
+
+        if self.pk is not None and self._original_device != self.device_id:
+            raise ValidationError({
+                "device": "Components cannot be moved to a different device."
+            })
+
     @property
     def parent_object(self):
         return self.device